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Pole piece forming device and pole piece forming method

A forming device and forming method technology, applied in the direction of electrode manufacturing, electrode rolling/calendering, presses, etc., can solve the problems of uneven winding of pole piece S, different elongation, and easy wrinkling of blank area S3, etc., to achieve The effect of reducing the risk of breakage, eliminating mutual influence, and reducing the risk of wrinkling

Pending Publication Date: 2021-02-02
CONTEMPORARY AMPEREX TECH CO
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Problems solved by technology

However, in the process of rolling the pole piece, the blank area S3 is not under pressure, so it will not elongate, while the area of ​​the substrate S1 coated with the coating S2 will be elongated by compression, thus causing the substrate Different areas of S1 have different elongation rates, and the blank area S3 is easy to wrinkle, which will cause uneven winding of the pole piece S

Method used

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  • Pole piece forming device and pole piece forming method
  • Pole piece forming device and pole piece forming method
  • Pole piece forming device and pole piece forming method

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0046] In the description of this application, unless otherwise clearly specified and limited, the terms "first", "second", "third" and so on are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; The term "plurality" means more than two (including two); unless otherwise specified or stated, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection or a detachable connection, or Integral connection, or electrical connection, or signal connection; "connectio...

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Abstract

The invention provides a pole piece forming device and a pole piece forming method. The pole piece forming device comprises an unwinding mechanism, a compression roller mechanism, a stretching mechanism and a winding mechanism; the unwinding mechanism is used for arranging a pole piece, and the winding mechanism is used for winding the pole piece; the compression roller mechanism and the stretching mechanism are arranged on a belt conveying path of the pole piece, and the stretching mechanism is located on the downstream of the compression roller mechanism; the compression roller mechanism comprises a first roller and a second roller, and at least one of the first roller and the second roller is an elastic roller; the stretching mechanism comprises a third roller and fourth rollers; and aplurality of fourth rollers of the stretching mechanism are arranged at intervals in the direction parallel to the axial direction of the third roller.

Description

technical field [0001] The invention relates to the field of battery production, in particular to a pole piece forming device and a pole piece forming method. Background technique [0002] At present, major car manufacturers have higher and higher requirements for electric vehicle batteries. One of the most important points is the energy density of the battery. will increase accordingly. [0003] In the production process of the battery pole piece, it is usually necessary to roll the pole piece to increase the compaction density of the pole piece, thereby increasing the energy density of the battery. refer to figure 1 , the existing pole piece S includes a base material S1 and a coating S2 disposed on the base material S1, the uncoated coating S2 area of ​​the base material S1 forms a blank area S3 of the pole piece S, and the coating of the base material S1 The area with the coating S2 and the coating S2 form the coated area S4 of the pole piece S. However, in the proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D33/00B30B3/00H01M4/04
CPCB21D33/00B30B3/005B30B3/00H01M4/04H01M4/0435Y02E60/10
Inventor 汤克寒虞永生李世松邹建琨李克强廖如虎
Owner CONTEMPORARY AMPEREX TECH CO
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